Commit a30f8a91 authored Feb 17, 2020 by Anson Huang Committed by Viresh Kumar Feb 17, 2020

cpufreq: imx-cpufreq-dt: Add "cpu-supply" property check



The cpufreq-dt driver allows cpufreq driver enabled without valid
regulator assigned, however, all i.MX platforms using cpufreq-dt
driver now require valid regulator, add "cpu-supply" property check
to avoid i.MX platforms' cpufreq enabled without valid regulator
and lead to system unstable.

Signed-off-by: Anson Huang <Anson.Huang@nxp.com>
Signed-off-by: Viresh Kumar <viresh.kumar@linaro.org>

parent 0ea4fb29

drivers/cpufreq/imx-cpufreq-dt.c

+3 −0

Original line number	Diff line number	Diff line
		@@ -31,6 +31,9 @@ static int imx_cpufreq_dt_probe(struct platform_device *pdev)
		int speed_grade, mkt_segment;
		int ret;

		if (!of_find_property(cpu_dev->of_node, "cpu-supply", NULL))
		return -ENODEV;

		ret = nvmem_cell_read_u32(cpu_dev, "speed_grade", &cell_value);
		if (ret)
		return ret;

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